Flush-tank.



K. S. BLANCHARD.

FLUSH TANK.

APPLICATION IILED FEB. 13,

Patented Oct. 20, 1914.

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ATTORNEY.

VHF NORRIS PETERS 60.. PHam-LITHJ. WASHINGTON D. c.

K. s. B LANGHARD.

FLUSH TANK.

APPLIOATION FILED FEB. 18, 1913.

Patented 0011.20, 1914.

2 SHEETS-SHEET 2.

INVENTOR.

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THE NORRIS PETERS 60.. iH OTO-LITHQ. WASHINGTON. By C.

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KIRK S. BLANCI-FARD, OF IBRQOKLYN, NEW YORK.

FLUSH-TANK.

Specification of Letters Patent.

Patented0ct.20, 1914.

Applicationfiled February 18, 1913. Serial No. 749,104.

To all whom it may concern Be it known that LKIRK S. BLANCHARD, of Brooklyn. in the county of Kings in the State ofNew York, have invented new and useful Improvements in Flush-Tanks, of which the following, taken in connection with the accompanying drawings, is a full. clear, and exact description.

This invention relates to certain improvements in flush tanks for water closets and more particularly to the ventilation as associated with the flushing device and controlling means for the water supply.

One of the objects is to provide a portion of the bottom and one of the upright sides of a one piece tank with a double wall so as to form an integral ventilating chamber without scams or joints and to reduce the liability of leakage to a minimum and at the same time afford a suitable chamber for the reception of a ventilating fan adapted to be driven by a water motor within the tank and operated by the inflowing water supply to the interior of the tank.

Another object is to incorporate within the tank a suitable valve case containing separate valves for controlling the supply of water to the motor independently of that which controls the main water supply for the tank so that the ventilating motor may be operated independently of the float-controlled su'pply valve.

A further object is to provide simple means for holding the flush valve open when operated from its normal position until. the water is practically discharged from the tank and to automatically trip the holding means when the water in the tank reaches its lowest level.

Other objects and uses will be brought out in the fOllOWiIlg' description. I

In the drawings-Figure 1 is a vertical sectional view of my improved flush tank and mechanism contained therein, showing also a portion of the bowl and seat in elevation, partly in section. Fig. 2 is a top plan of the flush tank and mechanism-therein and also the rear portion of the bowl and seat to which the tank is connected, a portion of the cover of the tank being broken away. Fig. 3 is an enlarged detail sectional view through a portion of the valve case in the tank, showing the valve and passage for controlling the supply of water to the fan motor. Fig. 4c is an enlarged sectional view of the flush valve and a part of its operating mechanism together with the adjacent portion of the tank taken on line l-i, Fig. 2. Fig. 5 is an enlarged transverse vertical sectional view through a portion of the tank and valve case therein taken on line 55, Fig. 2. Fig. 6 is an enlarged longitudinal sectional view of one end of the tank showing the ventilatingchambers and fan and also the motor and valve case taken on line 6 6, Fig. 2. Fig. 7 is an enlarged transverse sectional view through one end of the tank taken on line 77, Fig. 2. Fig.

8 is an enlarged detail sectional View through the rear end of the bowl taken on line 88, Fig. 2, showing a portion of the ventilating flue communicating with the interior of said bowl. Fig. 9 is a sectional view similar to Fig. 8 of a slightly modified form of ventilating flue as applied to old bowls.

In order that my invention may be clearly understood, I have shown a portion of a bowl 1 as connected by a flush pipe 2- and ventilating pipe 3- to the hottom of a flush tank 4-, the bowl being provided with a suitable seat 5 which is hinged at 6 to brackets -7 rising from the upper side of the bowl. This bowl may be of any suitable construction except that the upper rear portion thereof is provided with a forwardly and rearwardly extending ventilating channel or flue -8-' leading from the interior of the bowl and preferably communicating with the space between the upper surface of. the rim of the bowl and lower face of the seat, said channel being located above and separate from the adjacent end of the flush pipe -2 and is of considerable cross sectional area, as shown in Fig. 8, for the reception of the adjacent end of the ventilating pipe One end of the flush pipe '-2 is con nectcd to the bowl in the usual manner while the opposite end is connected by a union or coupling member 9 to an externally threaded boss 10 which is secured to and extends downwardly some distance from the bottom of the tank as shown moreclearly in Fig. 4. I p

The hollow boss 10 forms a continuation of the flush pipe 2' leading to the interior of the tank. and extends upwardly a suflicient distance into the interior ofsaid tank to form a valve seat -11 forthe flush valve the portion of the bo'ss which is within the interior of the tank loc ing provided with a refill passage below the valve seat to establish communication between the interior of the flush pipe and over flow pipe -1t as shown more clearly in Figs. 1 and 4.

The valve -12 is connected by a link 15- to one end of a lever 16 which is pivoted at -17- to a collar 18- on the overflow pipe '14c and its other end is pivotally connected tothe lower end of an. upright link 19 having its upper end pivotally attached to a sliding plate -20, as shown in Fig. 7, some distance above the water line or upper end of the overflow pipe 14-.

An upright operating rod 21 is connected at its upper end to the sliding plate 20 and has its lower end extending through the bottom of the ventilating chamber of the tank and provided with a lateral forwardly projecting offset 22 extended upwardly at the front of the tank through a suitable guide way 2? terminating in a hand piece at the front of the tank into. separate non-communieating chambers near one end and within easy reaching distance of the seat of the bowl so that by depressing the hand piece 24, similar movement will be transmitted to the link 19- and adjacent end of the valve lever- The tank l is preferably made in one piece of cast metalv and is divided interiorly or compartments 25 and 26-, one of which, as the compartment 25, is con siderably smaller than the other compart-v ment. 26. and constitutes what may be termed: a ventilating chamber, while theother larger compartment is adapted tocontain water for flushing purposes.

The ventilating chamber or compartment 25 is, preferably, formed by making portions of the bottom and one of the upright sides or ends. of thetank hollow or double-walled so as to communicate at their junctions one with'the other, as shown more clearly in Figs. 5 and 6, the upper end of the upright portion of the ventilating chain ber -25 being enlarged to receive a rotary in 27--, as shown in Fig 6, and is provided with an outlet 28 adapted to be connected to any ventilating flue leading to the exterior of the building but not necessary to herein illustrate or describe.

The lower horizontal portion of the ventilating chamber 25, formed. by the hollow bottom wall of the tank, extends lengtln \vise of said tank from one end to a point directly in front of the flush valve +12 where it communicates through an inlet passage -2.9 with the conduit 8 leading to the interior of the bowl -1 as shown. more clearly in Fig. 1. The fan chamber, therefore, constitutes part of the ventilating chamber and is disposed in the upper portion of the tank near one end but above the water line, while the opposite or lower end of the chamber, it is evident is below the low water level but, as previously stated, is cut oil from communication with the water chamber 26 by the inner walls of the chamber -25, the top of the tank being preferably closed by a suitable cover 30.

The fan 27- is driven by a coaxial water motor 3l which, together with the fan is mounted upon opposite ends of a horizontally disposed shaft -32, the latter being journaled in a sleeve 33 extending through an opening in the inner side of the fan chamber and rigidly secured thereto. to form a water and air tight joint as shown in Fig. 6.

If desired. the upper side of the ventilat ving chamber be closed by a suitable cap 3l which extends downwardly at the inner side of the motor to properly house sa 1d motor and prevent splashing of the water through the top of the tank and at the same time permitting it to be discharged at f the bottom into said tank. This cap may be secured: in place by any suitable fastening means, as screws 35, and is provided with an inlet 3G for receiving water under pressure throughthe supply pipe 3T, the latter being connected to a valve case 38 within the tank. This valve ease contains two valves 39 and -40- and a. rock shaft 41- as shown more clearly in Figs. 5. and 6 and is connected by a slip joint with one end of a. branch water supply pipe -i.3 having its opposite. end inserted in an opening l4. in the bottom. of the tank as shown in Fig. 5, said opening being connected to a main sup ply pipe l5 by slip connection. l6-.

The valve 39 controls the flow of wa ter through an outlet H in the interior of the tank and is operated by means of a float lever l8 which is pivoted at 'l9 to. a pendant boss beneath the valve and is connected intermediate its ends. by a link 5.0 to said valve.

A float 5l is secured to the free end ofthe lever and adapted to be operated by the rise and fall of the water within the tank to control the opening and closing of the valve --89- in a manner somewhat similar to that set forth in my pending application No. 724,167, filed October 5, 1912.

The valve case 3S is provided with a branch passage 52. communicating with the main passage and. controlled by the valve l0. which controls the flow of water or other motive fluid tothe motor.

The valve. -4t0 is pivotally connected to the intermediate portion of a lever 53 which extends lengthwise of the shaft l1 and has one endpivoted to. an arm -54 on the valve case and its other end adapted to ride upon the periphery of a cam -55- on the adjacent end of the rock shaft llso that when the shaft is rotated in one direction, the cam 55- will elevate the adjacent end of the lever 53 and thereby lift the valve -d 0- from its seat to allow the water to pass from the main passage into the branch passage 52 and thence to the motorfor operating the latter. I The rock shaft -'l-.1- may be operated by the depression of the seat 5 through the medium of a seat-operated lever 56- which is pivoted at 57+ to one side of the bowl as shown in Fig. 2 and has its forward end extending under and against the seat 5'and its rear end pivotally connected with a loss motion to a crank arm 5S- onone end of a rock shaft 59 This rock shaft is journaled in suitable bear-v ings 60 on the'underside of the bottom of the tank and has its, opposite end provided with a crank arm -6l. which is pivotally connected to a yoke 62' on the lower end, of a vertically movable rod -63', the latter extending through an opening in the bottom of the upright portion of the ventilating chamber 25- as shown more clearly in Fig; 6.

Secured to the upper end of this rod G3 is a laterally projecting arm 64l which is pivotally connected with a loss mo tion to a crank arm 65 and on the end of the rock shaft --&1 opposite that to which the cam 55 is secured. It, therefore, follows that any depressions of the bowl seat from its normal position, would cause a corresponding depression of the front end of the lever 56, thereby elevating the rod G3 and rocking the crank 65 upwardly to rotate the shaft %l and its cam -55 for the purpose of opening the valve -l0 and operating the motor as previously described.v

Both of the vertical rods 21 and --63 for of ecting the operation of the flush valve and motor respectively are passed through apertures in the bottom of the upright portion of the ventilating chamher and the lateral offsets of said rods are passed through vertically elongated apertures in the upright walls of said chamber, said apertures being of suliicient vertical length to permit the required vertical movement of the rods as shown more clearly in Figs. 6 and '7, but in each instance the side of the opening exposed to the water chamber may be closed by sliding plates 2().

It is desirable in this class of flush tanks to provide means for holding the flush valve open until the water is discharged to the lowest level from the tank and for this purpose I have provided a Weighted detent or pawl 65-- having its upper end iliary float lever as shown in Figs;

1, 2, 4 nd 7. I

An auxiliary float lever 'Z0 is pivoted at -7lto the col ar -18 below but in close proximity to the? lever 16- and extends laterally some distance therefrom for supporting at its free end a float 72 near the bottom of the tank.

The detent G5 is provided with a catch orshoulder 78 positioned so as to engage and lock the flush valve lever in position for holding the flush valve open when it is opened voluntarily by the de-- pression of the operating member -2 l-.

Vi hile the flush valve is; closed, theaux buoyancy, thereby holding the pin or stud -69 out i of contact with the adjacent cam -6S on the lower end of the detent -65 vbut as soon as the flush valve is opened allowing the detent 65 to inter lock with the lever and to hold the valve in its open position, the recession of the outflowingwater to its lowest level allows the auxiliary-float 'Z2 to drop, thereby "(2+- is held up by its own bringing the stud or pin69 into engage ment with the cam 68 to trip the detent andiallowthefiush valve to close by its own gravity, thus returning the lever 16- and its operating mechanism to normal position. It is evident, however, that during this recession of the water in the tank, the float 5l-- drops by its own gravity to open the valve -39 and allow the tank to refill, the closet bowl being refilled through a refill pipe 80-- leading from the discharge opening 47 into the upper end of the overflow pipe 1l from which such refilled water passes into the flush pipe through the passage 13, Fig. 4.

In Fig. 8, I have shown a ventilating chamber 8- as formed in the bowl, but in old closets, I may use an extra cap or cover 8'- as shown in Fig. 9, cooperating with the top of the bowl to form the desired ventilating space.

The operation of my invention will now be readily understood upon reference to the foregoing description and the accompanying drawings and it is evident that various changes may be made in the bowl construction and arrangement of the several parts without departing from the spirit of this invention.

What I claim is:

l. A flush tank for water closets having an interior partition running horizontally along the bottom and vertically along one outlet leading to the motor, a valve for the end and united to said bottom and end to form a ventilating chamber separate from the remaining interior space, a vent pipe leading from the ventilating chamber, a fan ifn said chamber, and driving means for the an. 2. A flush tank for water closets having an interior partition running horizontally along the bottom and vertically along one end and united to said bottom and end to form a ventilating chamber separate from the remaining interior space, a vent pipe leading from the ventilating chamber, a fan in said chamber, a shaft for the fan extending through the upright portion of the partition, a water-motor secured to the inner end of the shaft, a flush pipe and a water supply pipe both leading from the interior of the tank separate from the ventilating chamber, a flush valve for the flush pipe, a ball cock for the supply pipe discharging into the tank and provided with a separate separate outlet, and means for operating said valve.

3. In combination with bowl having an air vent leading from its the bowl-vent with said chamber, a delivery pipe leading from the chamber, a fan in said chamber, a water motor for the fan, a flush pipe and a water supply pipe both leading from the interior of the tank separate from the ventilating chamber, the flush pipe being connected to the bowl, a valve for the flush pipe discharging into the tank and provided with a separate outlet leading to the motor, a valve forsaid outlet, and means having portions thereof extending through the ventilating chamber for operating said valve.

4:. In combination with the bowl of a water closet, a low-down tank at the rear and just above the top of the bowl, a flush pipe leading from the rear end of the bowl into the bottom of the tank, and a vent pipe leading from the bowl directly above the l adjacent end of the flush pipe and entering 1 the bottom of the tank directly in front of the flush pipe, said tank having a ventilat- ,ing chamber therein separate from the remaining water space and communicating with the vent pipe.

a water-closet my hand this th day of February, 1918. interior, a flush tank having a partition extending along and near its bottom and one f end and united thereto to form a ventilat-- ing chamber separate from the remaining space in the tank, a vent pipe connecting In witness whereof I have hereunto set KIRK S, BLANCHARD.

WVitne'sses:

C. H. Mnmnrr, A. N. Wmoox.

Iopies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents,

Washington-,1). G. 

